Hauv kev tsim cov txheej txheem ntawm titanium thiab titanium alloy khoom, deg pickling yog ib qho tseem ceeb ntawm cov kauj ruam tseem ceeb. Nws ua hauj lwm tsis tau tsuas yog raws li ib tug zoo nkauj enhancer rau cov khoom cov tsos, tab sis kuj raws li ib tug saib xyuas ntawm nws cov kev ua tau zoo thiab lifespan. Kab lus no delves rau hauv cov txheej txheem ntawm deg pickling rau cov khoom titanium.
Lub hom phiaj ntawm Pickling: Vim li cas nws tseem ceeb?
Titanium is an extremely reactive metal, but its surface naturally forms a dense, stable oxide layer (primarily TiO₂), which grants it excellent corrosion resistance. Txawm li cas los xij, thaum lub sijhawm ua haujlwm (xws li kub dov, kev kho cua sov, forging), lub ntuj oxide txheej no thickens, ua tsis sib xws, thiab yog nrog los ntawm kev tsim ntawmnplaithiab ibalpha oxygen- nplua nuj txheej(tseem hu ua "oxygen-enriched txheej").
Tshem tawm qhov tsis xws luag: Cov nplais tawv thiab nkig thiab alpha oxygen- txheej txheej nplua nuj tsim thaum lub sijhawm ua haujlwm siab - kub tuaj yeem dhau los ua qhov chaw pib tawg hauv kev ua haujlwm siab tom qab yog tias tsis tau muab tshem tawm kom zoo, ua rau cov khoom tawg.
Restoring Baseline Corrosion Resistance: Tsis sib haum thiab tsis tiav nto oxides cuam tshuam titanium's natural passive zaj duab xis, pib cov ntsiab lus rau localized corrosion. Pickling removes these unstable layers, exposes fresh substrate, and forms a new, uniform, and dense passive film, thereby restoring and ensuring its excellent corrosion resistance.
Npaj rau kev ua haujlwm tom ntej: Ib qho huv si, qhib qhov chaw yog qhov yuav tsum tau ua ua ntej kom ua tiav cov adhesion zoo ua ntej vuam, txheej, plating, lossis lwm yam kev kho saum npoo.
Txhim kho cov khoom tshwm sim: Tshem tawm cov xim tsis zoo, cov cim vuam, thiab lwm yam, kom ua tiav cov nyiaj zoo ib yam - dawb xim hlau.
Txheem Txheej Txheem Flow
Ib kab tag nrho pickling feem ntau suav nrog cov kauj ruam hauv qab no, tsim lub voj kaw:
Degreasing: Yuav tsum xub tshem tawm cov roj thiab roj kom huv si. Feem ntau ua tiav siv alkaline degreasers ntawm cov tshuaj tsuag lossis immersion txoj kev. Kev tshem tawm cov roj tsis tiav ua rau tsis sib xws.
Dej Kub Rinsing: Ntxuav tawm cov seem alkali thiab qee yam kab mob.
Pickling: Muab cov khoom titanium tso rau hauv qhov npaj HF-HNO₃ pickling da dej. nruj tswj qhov kub thiab txias, concentration, thiab lub sijhawm.
Kub: Feem ntau ntawm chav tsev kub thiab 50℃. Qhov kub siab dua nce tus nqi pickling tab sis ua kom tswj tau nyuaj dua.
Sijhawm: Ntau npaum li cas los ntawm kaum vib nas this mus rau ob peb feeb, yuav tsum tau tiag tiag - lub sij hawm hloov raws li scale thickness thiab acid concentration, kom txog rau thaum lub teev raug tshem tawm tag nrho thiab cov nto pom ib tug uniform nyiaj - xim dawb.
Dej Txias Dej: Tam sim ntawd yaug kom huv si nrog dej txias kom tshem tawm cov tshuaj tiv thaiv pickling thiab ntxuav tawm cov kua qaub thiab hlau ntsev los ntawm qhov chaw.
Dej Ntshiab Rinsing (yeem): Rau siab -xav tau sectors xws li aerospace thiab kev kho mob teb, siv high- dej purity rau zaum kawg yaug kom tsis txhob muaj paug los ntawm impurities xws li chloride ions thiab tsis txhob pitting corrosion.
Qhuav: Ua kom qhuav sai thiab huv si siv cov cua kub los yog cov cuab yeej ziab kom qhuav kom tsis txhob muaj dej.
Txoj Kev Loj Hlob thiab Eco-Txoj Kev Ua Haujlwm Zoo Tshaj Plaws
Raws li kev tswj hwm ib puag ncig tau nce zuj zus, kev sib xyaw ua ke -acid pickling technologies ntsib teeb meem, ua rau muaj kev tshwm sim tshiab:
Fluoride-Free/Low-Fluoride Pickling: Tshawb nrhiav lwm cov kua qaub (piv txwv li, hydrogen peroxide-organic acid systems) los hloov HF ib nrab los yog tag nrho, txo cov kuab paug ib puag ncig thiab ua haujlwm txaus ntshai.
Environmentally Friendly Pickling & Passivation Solutions: Txhim kho cov khoom lag luam uas sib xyaw ua ke thiab passivation. Cov no feem ntau muaj cov ntsiab lus fluoride qis dua, muab cov txiaj ntsig ua tau zoo dua qub, thiab muaj kev nyab xeeb dua ib puag ncig.
Lub cev ua ntej-kev kho mob + luv- sijhawm Pickling: Siv cov txheej txheem siv tshuab xws li sandblasting lossis txhaj tshuaj peening kom tshem tawm feem ntau ntawm cov tuab tuab ua ntej, ua raws li luv luv - sijhawm, qis- concentration pickling, yog li txo qis acid noj thiab ua paug.
Automation thiab Intelligenization: Siv cov neeg hlau rau kev ua haujlwm pickling thiab sensors tiag tiag - lub sijhawm saib xyuas cov kua qaub thiab qhov kub thiab txias ua rau raug kaw - voj tswj cov txheej txheem tsis sib xws, ua kom cov khoom zoo ib yam.
